TY  - JOUR
AU  - Gruber, Mathias
AU  - Muller, Arne
AU  - Jovanov, Vladislav
AU  - Walter, Manfred J.
AU  - Veig, Wag
PY  - 2017
UR  - https://ieeexplore.ieee.org/document/7922487
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6474
AB  - Metal-mesh based electrode systems are a highly conductive, versatile, and inexpensive alternative to ITO-electrodes for organic photovoltaic (OPV) cells. However, they do not offer full surface conductivity and are, therefore, usually combined with an additional conductive layer (e.g. PEDOT:PSS), which enables lateral charge-transport in the area in between the metal tracks. The sheet conductivity of this additional lateral conductive layer (LCL) needs to be carefully tuned with respect to the distance of the metal tracks to reduce short circuit current (Jsc) losses and additional series resistance due to resistive losses in the LCL material. Usually, this is done via electrical simulation or via analysis of IV-measurements of a large number of devices with different LCL sheet conductivities. Here, we present the light-biased light-beam-induced-current (LB-LBIC) measurement technique as a direct way to visualize current collection losses due to PEDOT:PSS sheet resistance in metal mesh/bus bar based OPV cells. We demonstrate that with LB-LBIC we are not only able to visualize and optimize lateral charge extraction under real-device operation conditions in OPV cells based on a high-resolution metal mesh but can measure the PEDOT:PSS sheet resistance in operating OPV devices as well.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
T2  - IEEE Journal of Photovoltaics
T1  - Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC
VL  - 7
IS  - 4
SP  - 1042
EP  - 1049
DO  - 10.1109/JPHOTOV.2017.2699230
ER  - 

@article{
author = "Gruber, Mathias and Muller, Arne and Jovanov, Vladislav and Walter, Manfred J. and Veig, Wag",
year = "2017",
abstract = "Metal-mesh based electrode systems are a highly conductive, versatile, and inexpensive alternative to ITO-electrodes for organic photovoltaic (OPV) cells. However, they do not offer full surface conductivity and are, therefore, usually combined with an additional conductive layer (e.g. PEDOT:PSS), which enables lateral charge-transport in the area in between the metal tracks. The sheet conductivity of this additional lateral conductive layer (LCL) needs to be carefully tuned with respect to the distance of the metal tracks to reduce short circuit current (Jsc) losses and additional series resistance due to resistive losses in the LCL material. Usually, this is done via electrical simulation or via analysis of IV-measurements of a large number of devices with different LCL sheet conductivities. Here, we present the light-biased light-beam-induced-current (LB-LBIC) measurement technique as a direct way to visualize current collection losses due to PEDOT:PSS sheet resistance in metal mesh/bus bar based OPV cells. We demonstrate that with LB-LBIC we are not only able to visualize and optimize lateral charge extraction under real-device operation conditions in OPV cells based on a high-resolution metal mesh but can measure the PEDOT:PSS sheet resistance in operating OPV devices as well.",
publisher = "Institute of Electrical and Electronics Engineers (IEEE)",
journal = "IEEE Journal of Photovoltaics",
title = "Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC",
volume = "7",
number = "4",
pages = "1042-1049",
doi = "10.1109/JPHOTOV.2017.2699230"
}

Gruber, M., Muller, A., Jovanov, V., Walter, M. J.,& Veig, W.. (2017). Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC. in IEEE Journal of Photovoltaics
Institute of Electrical and Electronics Engineers (IEEE)., 7(4), 1042-1049.
https://doi.org/10.1109/JPHOTOV.2017.2699230

Gruber M, Muller A, Jovanov V, Walter MJ, Veig W. Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC. in IEEE Journal of Photovoltaics. 2017;7(4):1042-1049.
doi:10.1109/JPHOTOV.2017.2699230 .

Gruber, Mathias, Muller, Arne, Jovanov, Vladislav, Walter, Manfred J., Veig, Wag, "Direct Visualization of Charge-Extraction in Metal-Mesh Based OPV Cells by Light-Biased LBIC" in IEEE Journal of Photovoltaics, 7, no. 4 (2017):1042-1049,
https://doi.org/10.1109/JPHOTOV.2017.2699230 . .